# Masahiro Seyama

> Masahiro Seyama is a startup investor at Gree (Tokyo). See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Gree](https://shizune.co/investors/profile/gree)
- Location: Tokyo, Japan
- Last updated: Aug 2026

Masahiro Seyama is a startup investor at Gree in Tokyo. Masahiro Seyama - Corporate Auditor @ GREE

## About Gree

VC Fund · Tokyo, Japan

Gree is a Japanese internet media company that provides mobile social networking, and mobile technology services for its users. Gree shares development and operational expertise across all its studios as Gree always works to create new game models for its customers.

5 contacts available at Gree.

| Name | Title | Profile |
| --- | --- | --- |
| Aikawa Shintaro | Executive officer | https://shizune.co/investors/profile/aikawa-shintaro |
| Andy Keidel | VP, Engineering | https://shizune.co/investors/profile/andy-keidel |
| Isaka Tomoyuki | Executive officer | https://shizune.co/investors/profile/isaka-tomoyuki |
| Masada Matsuda | Executive officer | https://shizune.co/investors/profile/masada-matsuda |
| Masahiro Seyama | Corporate Auditor | https://shizune.co/investors/profile/masahiro-seyama |

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